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TCRP Report 130: Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide (2009)
Transit Cooperative Research Program (TCRP)

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Transportation Research Board. "4) Pressure to Commingle Is Heaviest on Lines with Higher Freight Densities* - A Review of Different Solutions." TCRP Report 130: Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide. Washington, DC: The National Academies Press, 2009.

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Page
53
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Page
53
Front Matter (R1-R12)
Research Objective (1-1)
Report Output (2-2)
Business Case (3-4)
Train Control Technology (5-5)
Grade Crossing Hazards (6-6)
Requirements for Concurrent Shared-Track Operations (7-7)
Practical Shortcuts (8-8)
Advancing the Shared-Track Concept (9-9)
Introduction (10-10)
Reader's Guide to the Final Report (11-11)
Scope of Work for Project A-27 (12-12)
Research Approach (13-13)
Characteristics of a Shared-Track Corridor (14-14)
Freight Operations Perspective (15-16)
Why Share Track? (17-17)
The Business Model (18-18)
Business Model Structure (19-19)
The Business Case (20-20)
Shared-Track - A Practical Business Case Structure (21-22)
Role of the Designated State Safety Organization (23-23)
Methods for Risk Analyses (24-24)
Equal Risks, Equivalent Safety (25-25)
Underpinning the Case for Shared-Track (26-26)
The Role of Command and Control Systems in Shared-Track (27-27)
1) Train Control System Functions (28-28)
2) Train Control System Design Parameters (29-29)
4) Train Control - Emerging Technology - PTC and CBTC (30-30)
System and Integration Testing - Vendor Role (31-31)
8) Issues Unique to Train Control for Shared-Track (32-32)
Auxiliary Safety Critical Systems (33-33)
9) Fail-Safe Train Separation (34-35)
2) Regulatory and Practical Requirements (36-37)
4) Functional Design of a Communications System (38-38)
2) Regulatory Mandates (39-39)
4) The Rulebook (40-40)
5) Rules and Procedures for Shared-Track (41-41)
Background (42-42)
2) Diesel Multiple Units and Electrical Multiple Units (43-43)
2) Crash Energy Management (CEM) (44-44)
3) Propulsion System (45-45)
5) Other Considerations (46-46)
Vehicles for Shared-Track Applications (47-47)
3) Standardization (48-48)
Applying Technology to Shared-Track Operations - A Brief Guide (49-50)
Shared-Track Operations - The North American Experience (51-51)
2) Former Private Freight Railroad Owner Becomes a Privileged Tenant (52-52)
4) Pressure to Commingle Is Heaviest on Lines with Higher Freight Densities* - A Review of Different Solutions (53-53)
6) Transit Operators Choosing to Avoid Commingling Sacrificed Service Quality and Efficiency (54-54)
Business Case Template (55-55)
Alternatives Analysis (56-56)
Reasons to Consider Noncompliant Equipment (57-57)
Service Characteristics to Justify the Choice of a Light Rail System (58-58)
Structures Considerations (59-59)
Cost and Ridership Analyses (60-60)
Cost Analysis for Signal System Alternatives (61-62)
System Capital Cost Assessment (63-63)
System Operating Cost Assessment (64-65)
Alternatives Evaluation (66-66)
Introduction (67-67)
Risk Analysis and Modeling Methodology (68-70)
Results and Risk Analysis Findings (71-72)
Safety Case Findings (73-73)
San Diego Trolley (74-74)
Achievable Incremental Steps (75-75)
Practical Shortcuts For Shared-Track (76-76)
Demonstration Project (77-77)
Application of Risk Analyses Methodology to the Demonstration Project (78-78)
Data Collection Plan (79-79)
San Diego Trolley, Inc. (80-80)
Barriers to Implementation (81-81)
Shared Track - The Potential Market (82-82)
Shared-Track Operation - An Evolving Concept (83-84)
Bibliography (85-86)
Appendix 1 - Abbreviations (87-87)
Appendix 2 - Glossary of Shared-Track Definitions (88-92)
Appendix 3 - TCRP A-27 Research Task Descriptions (93-97)
Appendix 4 - Relative Cost Comparison of Train Control Systems (98-99)
Appendix 5 - Sample Operating Rulebook Table of Contents (100-100)
Appendix 6 - Vehicle Cost Drivers (101-101)
Appendix 7 - Some Examples of Current Production LRV and MU Vehicle Types (102-105)
Appendix 8 - Shared-Track System Status (106-106)
Appendix 9 - Shared-Track Configuration and Operational Alternatives (107-109)
Abbreviations used without definitions in TRB publications (110-110)

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OCR for page 53
Shared-Track: A Handbook of Examples and Applications 53 track operation generally requires the freight railroad to relinquish dispatching and maintenance control, the participation of freight rail owners gives freight interests a strong voice in deter- mining when freight service will take precedence. Some freight service schedule adjustments may be necessary, but it is the transit authority that must attempt to accommodate the freight carrier's needs, or else risk having the process stalled. This possibility arises from the FRA require- ment that conditional approval of any waiver petition requires the agreement of the prospective freight tenant. In several instances the transit system design shifted to require compliant vehicles to satisfy the service needs of the freight railroad, while avoiding conflict with federal regulations. In most cases, the compromise to use compliant equipment degraded the attractiveness of the transit service to the public agency and its customers. As a tenant of the transit system, the freight operator enjoys the use of a substantially upgraded facility while it is simultaneously relieved of the burden of maintaining and operating its former freight-only line. 3) Risks Are Managed by the Transit Agency Risk management and insurance are part of the general administration of the shared-track operator. Transit insurance packages generally cover all operations or all rail operations. For the systems reviewed, there are no instances where separate liability insurance is provided for shared-track, nor are there any where the freight railroad is required to carry liability insurance for the passenger operation. However, private owners of freight lines are generally concerned about the liability implications of introducing transit passenger operations on their freight-only line. Therefore, the transit agency usually insures freight carriers against increased liability risks due to the presence of passengers. In fact, two agencies (San Diego and NJ Transit) are self-insured. It appears that if ownership, control, and maintenance of the shared-track line pass to the pas- senger operator, the freight carrier may be better shielded from liability for accidents and injuries along the line. A. Agency liability is covered by existing agency insurance. In six out of eight currently opera- tional or soon-to-be operational systems, the risk of accident and injury claims is managed through an agencywide contract covering all aspects of the agency's operations. San Diego MTS's insurance covers bus, trolley, and rail operations. San Diego NCTD's agreement covers the proposed noncompliant service, as well as existing commuter rail and express bus service. New Jersey Transit's (NJT) contract covers all aspects of NJT's operations. Both San Diego and NJ Transit systems are self-insured. Maryland MTA's policy covers both its light rail and subway operations. B. Transit agency insures against the perceived increased risks for freight operation. Despite research that shows the risks are minimal, many freight operators require extra indemnity against transit accidents. On the River LINE, NJ Transit pays Conrail explicitly for an increase in Conrail's insurance fees due to the existence of a passenger operation on the Bordentown Secondary. On the San Diego Trolley, the agency names the freight operator as an insured party in their policy. On the San Diego NCTD, the agency is assigned most of the liability for mishaps, even when the freight operator is found to be negligent. The risk of the freight- passenger collisions is thus essentially insured through the agency's policy. 4) Pressure to Commingle Is Heaviest on Lines with Higher Freight Densities*--A Review of Different Solutions Where the route has strategic value as both a freight and transit corridor, and/or where the freight train service density is more than one roundtrip per day, there is likely to be greater pres- sure to commingle transit and freight trains.